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1-Inch to 3/4
1024 1" to 3/4 Step Down Bushing
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1-Inch to 3/4" Step-Down Bushing – Aluminum Adapter with Key

Part Number: 1024
Online Price: $15.00
1024 EC 1-Inch to 3/4" Step-Down Bushing – Aluminum Adapter with Key
Availability: In Stock.

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Description

1024 EC 1-Inch to 3/4" Step-Down Bushing – Billet Aluminum Adapter with Key Stock


The 1024 EC 1" to 3/4" Step-Down Bushing is a precision-machined billet aluminum adapter designed to reduce a 1" bore hub, brake hat, or sprocket down to fit a 3/4" axle shaft. Originally created to adapt our 1" brake hat (discontinued) to 3/4" transaxle axles, this bushing is now widely used in go-karts, racing lawnmowers, and custom small engine builds.


Whether you're fitting a 1" hub to a 3/4" axle or retrofitting drive components, this step-down bushing ensures proper alignment, fitment, and secure keyway engagement. Key stock is included to fit standard 1/4" keyways on both the hub and axle.


Step-Down Bushing Specs:

  • Material: CNC-machined billet aluminum
  • Overall Length: ~1.875"
  • Outside Diameter (Main Body): 1.000"
  • Inside Diameter: 3/4"
  • Keyway Width: 1/4"
  • Shoulder Length: ~0.150"
  • Shoulder OD: 1.200" – may require trimming or machining for certain fits


Included Key Stock:

  • Material: Hardened steel
  • Length: 1.850"
  • Width: 1/4"
  • Height: 0.375" – tall enough to engage axle, bushing, and hub keyways


Installation Notes:

  • Some applications may require light trimming or machining for proper fitment.
  • Always verify the dimensions of your axle and hub before installation.


This step-down bushing is ideal for adapting components in custom drivetrain setups and helps bridge compatibility between 1" hubs and 3/4" axles in performance and racing environments.

FAQ

Q1: What is this step-down bushing used for?
A: It adapts components with a 1-inch bore (like hubs or sprockets) to fit a 3/4-inch axle, commonly used in racing lawnmowers, go-karts, and small engine builds.


Q2: Does it include the key stock?
A: Yes, it comes with a steel 1/4" key that fits most standard keyways and is long/tall enough to bridge the axle, bushing, and hub.


Q3: Is any machining required?
A: In some setups, you may need to lightly trim or machine the shoulder for a proper fit, especially if space is tight or tolerances are close.


Q4: Can I use this with a 1" brake hat or sprocket?
A: Yes, it was originally designed for our 1" brake hat (now discontinued) but is compatible with most 1" bore components.


Q5: What material is the bushing made from?
A: It’s made from high-quality billet aluminum for lightweight strength and corrosion resistance.

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